Fix linter warning: replace f-strings with str.format for Py2 compat (#35492)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/35492
Test Plan: Imported from OSS
Differential Revision: D20998727
Pulled By: drdarshan
fbshipit-source-id: 54f34a7649a2772ad030b456f1b50aba831ce2e0
Author
Sudarshan Raghunathan
